# Bug Report ### π Search Terms string concat ### π Version & Regression Information 4.5.x - This is not a crash - This changed between versions 4.4.x and 4.5.x ### β― Playground Link https://www.typescriptlang.org/play?target=1&ts=4.5.5#code/G4QwTgBCELwQBgEgN4CMC+AHAHvIA ### π» Code ```ts var a = `${b}px` ``` ### π Actual behavior output: ```ts "use strict"; var a = "".concat(b, "px"); ``` ### π Expected behavior ```ts "use strict"; var a = b + "px"; ```